./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label13.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:38:41,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:38:41,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:38:41,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:38:41,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:38:41,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:38:41,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:38:41,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:38:41,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:38:41,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:38:41,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:38:41,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:38:41,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:38:41,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:38:41,378 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:38:41,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:38:41,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:38:41,379 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:38:41,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:38:41,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:38:41,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:38:41,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:38:41,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:38:41,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:38:41,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:38:41,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:38:41,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:38:41,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:38:41,383 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:38:41,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:38:41,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:38:41,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:38:41,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:38:41,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:38:41,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:38:41,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:38:41,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:38:41,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:38:41,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:38:41,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:38:41,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:38:41,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:38:41,387 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67239f1bf7e0cdf325715bd48f4c9c86a0588f752ce48acb5db8e3f7bfd7cd18 [2024-11-09 18:38:41,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:38:41,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:38:41,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:38:41,656 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:38:41,657 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:38:41,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2024-11-09 18:38:43,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:38:43,439 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:38:43,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.c [2024-11-09 18:38:43,460 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa105104/b905275cbdb949f99db8c1e62bf1ee1e/FLAG029bea539 [2024-11-09 18:38:43,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa105104/b905275cbdb949f99db8c1e62bf1ee1e [2024-11-09 18:38:43,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:38:43,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:38:43,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:38:43,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:38:43,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:38:43,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:38:43" (1/1) ... [2024-11-09 18:38:43,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a34706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:43, skipping insertion in model container [2024-11-09 18:38:43,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:38:43" (1/1) ... [2024-11-09 18:38:43,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:38:43,987 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.c[55139,55152] [2024-11-09 18:38:44,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:38:44,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:38:44,182 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label13.c[55139,55152] [2024-11-09 18:38:44,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:38:44,212 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:38:44,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44 WrapperNode [2024-11-09 18:38:44,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:38:44,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:38:44,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:38:44,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:38:44,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,335 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:38:44,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:38:44,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:38:44,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:38:44,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:38:44,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,353 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,392 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 18:38:44,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,427 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:38:44,459 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:38:44,459 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:38:44,459 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:38:44,460 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (1/1) ... [2024-11-09 18:38:44,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:38:44,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:44,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:38:44,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:38:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:38:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:38:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:38:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:38:44,598 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:38:44,600 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:38:46,040 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:38:46,041 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:38:46,056 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:38:46,057 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:38:46,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:38:46 BoogieIcfgContainer [2024-11-09 18:38:46,057 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:38:46,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:38:46,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:38:46,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:38:46,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:38:43" (1/3) ... [2024-11-09 18:38:46,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718cf138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:38:46, skipping insertion in model container [2024-11-09 18:38:46,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:44" (2/3) ... [2024-11-09 18:38:46,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718cf138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:38:46, skipping insertion in model container [2024-11-09 18:38:46,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:38:46" (3/3) ... [2024-11-09 18:38:46,064 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2024-11-09 18:38:46,078 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:38:46,078 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:38:46,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:38:46,162 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24f0041a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:38:46,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:38:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-09 18:38:46,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:46,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:46,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:46,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash 844592177, now seen corresponding path program 1 times [2024-11-09 18:38:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:46,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384231800] [2024-11-09 18:38:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:46,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384231800] [2024-11-09 18:38:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384231800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:46,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168433790] [2024-11-09 18:38:46,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:46,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:46,910 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:47,848 INFO L93 Difference]: Finished difference Result 835 states and 1484 transitions. [2024-11-09 18:38:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-11-09 18:38:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:47,869 INFO L225 Difference]: With dead ends: 835 [2024-11-09 18:38:47,869 INFO L226 Difference]: Without dead ends: 466 [2024-11-09 18:38:47,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:47,878 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:47,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 132 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:38:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-09 18:38:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 452. [2024-11-09 18:38:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.6141906873614191) internal successors, (728), 451 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 728 transitions. [2024-11-09 18:38:47,936 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 728 transitions. Word has length 157 [2024-11-09 18:38:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:47,936 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 728 transitions. [2024-11-09 18:38:47,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 728 transitions. [2024-11-09 18:38:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-09 18:38:47,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:47,940 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:47,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:38:47,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:47,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1656240327, now seen corresponding path program 1 times [2024-11-09 18:38:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445455159] [2024-11-09 18:38:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445455159] [2024-11-09 18:38:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445455159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372046514] [2024-11-09 18:38:48,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:48,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:48,208 INFO L87 Difference]: Start difference. First operand 452 states and 728 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:48,425 INFO L93 Difference]: Finished difference Result 1351 states and 2179 transitions. [2024-11-09 18:38:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:48,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-11-09 18:38:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:48,429 INFO L225 Difference]: With dead ends: 1351 [2024-11-09 18:38:48,430 INFO L226 Difference]: Without dead ends: 901 [2024-11-09 18:38:48,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:48,432 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 367 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:48,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 600 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:38:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-11-09 18:38:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 898. [2024-11-09 18:38:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 1.6109253065774805) internal successors, (1445), 897 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1445 transitions. [2024-11-09 18:38:48,478 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1445 transitions. Word has length 163 [2024-11-09 18:38:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:48,479 INFO L471 AbstractCegarLoop]: Abstraction has 898 states and 1445 transitions. [2024-11-09 18:38:48,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1445 transitions. [2024-11-09 18:38:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-09 18:38:48,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:48,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:48,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:38:48,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:48,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 485166846, now seen corresponding path program 1 times [2024-11-09 18:38:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9737508] [2024-11-09 18:38:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:48,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9737508] [2024-11-09 18:38:48,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9737508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:48,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:48,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42233794] [2024-11-09 18:38:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:48,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:48,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:48,736 INFO L87 Difference]: Start difference. First operand 898 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:49,397 INFO L93 Difference]: Finished difference Result 2650 states and 4288 transitions. [2024-11-09 18:38:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:49,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-11-09 18:38:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:49,409 INFO L225 Difference]: With dead ends: 2650 [2024-11-09 18:38:49,410 INFO L226 Difference]: Without dead ends: 1754 [2024-11-09 18:38:49,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:49,415 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 89 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:49,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 136 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:38:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2024-11-09 18:38:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1726. [2024-11-09 18:38:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.5971014492753624) internal successors, (2755), 1725 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2755 transitions. [2024-11-09 18:38:49,442 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2755 transitions. Word has length 165 [2024-11-09 18:38:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:49,442 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2755 transitions. [2024-11-09 18:38:49,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2755 transitions. [2024-11-09 18:38:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 18:38:49,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:49,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:49,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:38:49,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:49,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1168786854, now seen corresponding path program 1 times [2024-11-09 18:38:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:49,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668004530] [2024-11-09 18:38:49,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:49,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668004530] [2024-11-09 18:38:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668004530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:49,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954033493] [2024-11-09 18:38:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:49,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:49,599 INFO L87 Difference]: Start difference. First operand 1726 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:49,913 INFO L93 Difference]: Finished difference Result 5151 states and 8232 transitions. [2024-11-09 18:38:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2024-11-09 18:38:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:49,923 INFO L225 Difference]: With dead ends: 5151 [2024-11-09 18:38:49,923 INFO L226 Difference]: Without dead ends: 3427 [2024-11-09 18:38:49,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:49,927 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 350 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:49,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 517 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:38:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2024-11-09 18:38:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3422. [2024-11-09 18:38:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 1.5910552470038) internal successors, (5443), 3421 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 5443 transitions. [2024-11-09 18:38:49,980 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 5443 transitions. Word has length 172 [2024-11-09 18:38:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:49,980 INFO L471 AbstractCegarLoop]: Abstraction has 3422 states and 5443 transitions. [2024-11-09 18:38:49,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 5443 transitions. [2024-11-09 18:38:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 18:38:49,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:49,985 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:49,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:38:49,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:49,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1439495208, now seen corresponding path program 1 times [2024-11-09 18:38:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239702627] [2024-11-09 18:38:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:38:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:50,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239702627] [2024-11-09 18:38:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239702627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:50,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026685105] [2024-11-09 18:38:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:50,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:50,232 INFO L87 Difference]: Start difference. First operand 3422 states and 5443 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:51,104 INFO L93 Difference]: Finished difference Result 8506 states and 13488 transitions. [2024-11-09 18:38:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-09 18:38:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:51,136 INFO L225 Difference]: With dead ends: 8506 [2024-11-09 18:38:51,136 INFO L226 Difference]: Without dead ends: 5086 [2024-11-09 18:38:51,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:51,151 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 234 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:51,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 119 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:38:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2024-11-09 18:38:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5082. [2024-11-09 18:38:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 5081 states have (on average 1.5491045069868137) internal successors, (7871), 5081 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 7871 transitions. [2024-11-09 18:38:51,317 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 7871 transitions. Word has length 174 [2024-11-09 18:38:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:51,318 INFO L471 AbstractCegarLoop]: Abstraction has 5082 states and 7871 transitions. [2024-11-09 18:38:51,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 7871 transitions. [2024-11-09 18:38:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 18:38:51,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:51,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:51,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:38:51,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:51,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1803256478, now seen corresponding path program 1 times [2024-11-09 18:38:51,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:51,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595086167] [2024-11-09 18:38:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:51,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:51,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595086167] [2024-11-09 18:38:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595086167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:51,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:51,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888513597] [2024-11-09 18:38:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:51,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:51,555 INFO L87 Difference]: Start difference. First operand 5082 states and 7871 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:52,281 INFO L93 Difference]: Finished difference Result 14242 states and 22071 transitions. [2024-11-09 18:38:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2024-11-09 18:38:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:52,306 INFO L225 Difference]: With dead ends: 14242 [2024-11-09 18:38:52,307 INFO L226 Difference]: Without dead ends: 9162 [2024-11-09 18:38:52,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:52,316 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 201 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:52,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 198 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9162 states. [2024-11-09 18:38:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9162 to 9162. [2024-11-09 18:38:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9162 states, 9161 states have (on average 1.363060801222574) internal successors, (12487), 9161 states have internal predecessors, (12487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9162 states to 9162 states and 12487 transitions. [2024-11-09 18:38:52,443 INFO L78 Accepts]: Start accepts. Automaton has 9162 states and 12487 transitions. Word has length 177 [2024-11-09 18:38:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:52,443 INFO L471 AbstractCegarLoop]: Abstraction has 9162 states and 12487 transitions. [2024-11-09 18:38:52,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 9162 states and 12487 transitions. [2024-11-09 18:38:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 18:38:52,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:52,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:38:52,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:52,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2022241481, now seen corresponding path program 1 times [2024-11-09 18:38:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671212888] [2024-11-09 18:38:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671212888] [2024-11-09 18:38:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671212888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:38:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169120612] [2024-11-09 18:38:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:53,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:53,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:38:53,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:38:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:53,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:38:53,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:38:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:38:53,723 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:38:53,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169120612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:53,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:38:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:38:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893137273] [2024-11-09 18:38:53,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:53,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:38:53,725 INFO L87 Difference]: Start difference. First operand 9162 states and 12487 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:54,487 INFO L93 Difference]: Finished difference Result 26526 states and 36370 transitions. [2024-11-09 18:38:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:54,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-09 18:38:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:54,536 INFO L225 Difference]: With dead ends: 26526 [2024-11-09 18:38:54,537 INFO L226 Difference]: Without dead ends: 17366 [2024-11-09 18:38:54,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:38:54,553 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:54,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 387 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17366 states. [2024-11-09 18:38:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17366 to 17346. [2024-11-09 18:38:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17346 states, 17345 states have (on average 1.3161718074373019) internal successors, (22829), 17345 states have internal predecessors, (22829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17346 states to 17346 states and 22829 transitions. [2024-11-09 18:38:54,892 INFO L78 Accepts]: Start accepts. Automaton has 17346 states and 22829 transitions. Word has length 197 [2024-11-09 18:38:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:54,892 INFO L471 AbstractCegarLoop]: Abstraction has 17346 states and 22829 transitions. [2024-11-09 18:38:54,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17346 states and 22829 transitions. [2024-11-09 18:38:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-09 18:38:54,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:54,916 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:54,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:38:55,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:55,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:55,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2132723633, now seen corresponding path program 1 times [2024-11-09 18:38:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:55,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955257587] [2024-11-09 18:38:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 18:38:55,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:55,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955257587] [2024-11-09 18:38:55,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955257587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:55,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:55,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:55,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371072468] [2024-11-09 18:38:55,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:55,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:55,262 INFO L87 Difference]: Start difference. First operand 17346 states and 22829 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:55,990 INFO L93 Difference]: Finished difference Result 42656 states and 57340 transitions. [2024-11-09 18:38:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-11-09 18:38:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:56,166 INFO L225 Difference]: With dead ends: 42656 [2024-11-09 18:38:56,166 INFO L226 Difference]: Without dead ends: 25312 [2024-11-09 18:38:56,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:56,202 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 237 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:56,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 410 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:38:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25312 states. [2024-11-09 18:38:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25312 to 22856. [2024-11-09 18:38:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22856 states, 22855 states have (on average 1.2719754977029096) internal successors, (29071), 22855 states have internal predecessors, (29071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22856 states to 22856 states and 29071 transitions. [2024-11-09 18:38:56,495 INFO L78 Accepts]: Start accepts. Automaton has 22856 states and 29071 transitions. Word has length 208 [2024-11-09 18:38:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:56,496 INFO L471 AbstractCegarLoop]: Abstraction has 22856 states and 29071 transitions. [2024-11-09 18:38:56,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 22856 states and 29071 transitions. [2024-11-09 18:38:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-09 18:38:56,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:56,514 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:56,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:38:56,514 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:56,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1292077422, now seen corresponding path program 1 times [2024-11-09 18:38:56,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:56,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753473176] [2024-11-09 18:38:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 7 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 18:38:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753473176] [2024-11-09 18:38:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753473176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:38:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245522014] [2024-11-09 18:38:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:56,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:56,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:56,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:38:56,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:38:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:57,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:38:57,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:38:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 18:38:57,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:38:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245522014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:38:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:38:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824742593] [2024-11-09 18:38:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:57,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:38:57,197 INFO L87 Difference]: Start difference. First operand 22856 states and 29071 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:58,232 INFO L93 Difference]: Finished difference Result 67818 states and 86104 transitions. [2024-11-09 18:38:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:58,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-09 18:38:58,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:58,316 INFO L225 Difference]: With dead ends: 67818 [2024-11-09 18:38:58,316 INFO L226 Difference]: Without dead ends: 44964 [2024-11-09 18:38:58,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:38:58,345 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 231 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:58,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 202 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44964 states. [2024-11-09 18:38:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44964 to 44960. [2024-11-09 18:38:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44960 states, 44959 states have (on average 1.2287639849640783) internal successors, (55244), 44959 states have internal predecessors, (55244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44960 states to 44960 states and 55244 transitions. [2024-11-09 18:38:59,004 INFO L78 Accepts]: Start accepts. Automaton has 44960 states and 55244 transitions. Word has length 249 [2024-11-09 18:38:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:59,004 INFO L471 AbstractCegarLoop]: Abstraction has 44960 states and 55244 transitions. [2024-11-09 18:38:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44960 states and 55244 transitions. [2024-11-09 18:38:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 18:38:59,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:59,054 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:59,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 18:38:59,301 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:59,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash 589270482, now seen corresponding path program 1 times [2024-11-09 18:38:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410930756] [2024-11-09 18:38:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:59,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:38:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:39:01,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:01,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410930756] [2024-11-09 18:39:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410930756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:01,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213332243] [2024-11-09 18:39:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:01,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:01,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:01,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:39:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:01,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:39:01,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:39:02,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213332243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:39:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184680978] [2024-11-09 18:39:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:02,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:39:02,095 INFO L87 Difference]: Start difference. First operand 44960 states and 55244 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:03,870 INFO L93 Difference]: Finished difference Result 137927 states and 170043 transitions. [2024-11-09 18:39:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:39:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-11-09 18:39:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:04,061 INFO L225 Difference]: With dead ends: 137927 [2024-11-09 18:39:04,061 INFO L226 Difference]: Without dead ends: 92969 [2024-11-09 18:39:04,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:39:04,135 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 604 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:04,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 561 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:39:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92969 states. [2024-11-09 18:39:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92969 to 92885. [2024-11-09 18:39:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92885 states, 92884 states have (on average 1.227348090090866) internal successors, (114001), 92884 states have internal predecessors, (114001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92885 states to 92885 states and 114001 transitions. [2024-11-09 18:39:06,824 INFO L78 Accepts]: Start accepts. Automaton has 92885 states and 114001 transitions. Word has length 271 [2024-11-09 18:39:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:06,825 INFO L471 AbstractCegarLoop]: Abstraction has 92885 states and 114001 transitions. [2024-11-09 18:39:06,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 92885 states and 114001 transitions. [2024-11-09 18:39:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-09 18:39:06,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:06,881 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:06,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:39:07,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:07,082 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:07,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:07,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1084367955, now seen corresponding path program 1 times [2024-11-09 18:39:07,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003009045] [2024-11-09 18:39:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:39:07,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:07,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003009045] [2024-11-09 18:39:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003009045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:07,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197298521] [2024-11-09 18:39:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:07,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:07,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:07,706 INFO L87 Difference]: Start difference. First operand 92885 states and 114001 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:09,727 INFO L93 Difference]: Finished difference Result 219874 states and 268765 transitions. [2024-11-09 18:39:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:09,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2024-11-09 18:39:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:10,001 INFO L225 Difference]: With dead ends: 219874 [2024-11-09 18:39:10,002 INFO L226 Difference]: Without dead ends: 126991 [2024-11-09 18:39:10,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:10,062 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 156 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:10,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 210 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:39:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126991 states. [2024-11-09 18:39:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126991 to 126973. [2024-11-09 18:39:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126973 states, 126972 states have (on average 1.1958542040764892) internal successors, (151840), 126972 states have internal predecessors, (151840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126973 states to 126973 states and 151840 transitions. [2024-11-09 18:39:12,718 INFO L78 Accepts]: Start accepts. Automaton has 126973 states and 151840 transitions. Word has length 300 [2024-11-09 18:39:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:12,719 INFO L471 AbstractCegarLoop]: Abstraction has 126973 states and 151840 transitions. [2024-11-09 18:39:12,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 126973 states and 151840 transitions. [2024-11-09 18:39:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-09 18:39:12,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:12,776 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:39:12,776 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:12,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1231728884, now seen corresponding path program 1 times [2024-11-09 18:39:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494729487] [2024-11-09 18:39:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:12,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 18:39:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494729487] [2024-11-09 18:39:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494729487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101505426] [2024-11-09 18:39:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:13,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:13,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:13,671 INFO L87 Difference]: Start difference. First operand 126973 states and 151840 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:16,729 INFO L93 Difference]: Finished difference Result 382575 states and 456881 transitions. [2024-11-09 18:39:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:39:16,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2024-11-09 18:39:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:17,315 INFO L225 Difference]: With dead ends: 382575 [2024-11-09 18:39:17,315 INFO L226 Difference]: Without dead ends: 255604 [2024-11-09 18:39:17,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:17,489 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 481 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:17,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 565 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:39:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255604 states. [2024-11-09 18:39:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255604 to 255593. [2024-11-09 18:39:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255593 states, 255592 states have (on average 1.1761557482237315) internal successors, (300616), 255592 states have internal predecessors, (300616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255593 states to 255593 states and 300616 transitions. [2024-11-09 18:39:23,530 INFO L78 Accepts]: Start accepts. Automaton has 255593 states and 300616 transitions. Word has length 304 [2024-11-09 18:39:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:23,531 INFO L471 AbstractCegarLoop]: Abstraction has 255593 states and 300616 transitions. [2024-11-09 18:39:23,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 255593 states and 300616 transitions. [2024-11-09 18:39:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-09 18:39:23,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:23,633 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:23,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 18:39:23,634 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:23,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1200928108, now seen corresponding path program 1 times [2024-11-09 18:39:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705384100] [2024-11-09 18:39:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:24,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705384100] [2024-11-09 18:39:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705384100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:24,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614608429] [2024-11-09 18:39:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:24,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:24,063 INFO L87 Difference]: Start difference. First operand 255593 states and 300616 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:28,173 INFO L93 Difference]: Finished difference Result 569390 states and 667769 transitions. [2024-11-09 18:39:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-09 18:39:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:28,865 INFO L225 Difference]: With dead ends: 569390 [2024-11-09 18:39:28,866 INFO L226 Difference]: Without dead ends: 313799 [2024-11-09 18:39:29,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:29,013 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 106 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:29,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 389 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 18:39:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313799 states. [2024-11-09 18:39:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313799 to 290319. [2024-11-09 18:39:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290319 states, 290318 states have (on average 1.14678042698007) internal successors, (332931), 290318 states have internal predecessors, (332931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290319 states to 290319 states and 332931 transitions. [2024-11-09 18:39:35,767 INFO L78 Accepts]: Start accepts. Automaton has 290319 states and 332931 transitions. Word has length 306 [2024-11-09 18:39:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:35,768 INFO L471 AbstractCegarLoop]: Abstraction has 290319 states and 332931 transitions. [2024-11-09 18:39:35,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 290319 states and 332931 transitions. [2024-11-09 18:39:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-09 18:39:35,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:35,830 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:35,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 18:39:35,830 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:35,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1406612938, now seen corresponding path program 1 times [2024-11-09 18:39:35,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:35,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146708411] [2024-11-09 18:39:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-09 18:39:36,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:36,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146708411] [2024-11-09 18:39:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146708411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:36,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382345171] [2024-11-09 18:39:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:36,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:36,301 INFO L87 Difference]: Start difference. First operand 290319 states and 332931 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:41,526 INFO L93 Difference]: Finished difference Result 800333 states and 913259 transitions. [2024-11-09 18:39:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:39:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2024-11-09 18:39:41,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:42,464 INFO L225 Difference]: With dead ends: 800333 [2024-11-09 18:39:42,464 INFO L226 Difference]: Without dead ends: 510016 [2024-11-09 18:39:42,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:42,704 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 764 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:42,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 449 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 18:39:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510016 states. [2024-11-09 18:39:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510016 to 508305. [2024-11-09 18:39:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508305 states, 508304 states have (on average 1.1285884037898581) internal successors, (573666), 508304 states have internal predecessors, (573666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508305 states to 508305 states and 573666 transitions. [2024-11-09 18:39:53,192 INFO L78 Accepts]: Start accepts. Automaton has 508305 states and 573666 transitions. Word has length 306 [2024-11-09 18:39:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:53,192 INFO L471 AbstractCegarLoop]: Abstraction has 508305 states and 573666 transitions. [2024-11-09 18:39:53,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 508305 states and 573666 transitions. [2024-11-09 18:39:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-09 18:39:53,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:53,288 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:53,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 18:39:53,288 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:53,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1603302942, now seen corresponding path program 1 times [2024-11-09 18:39:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530137865] [2024-11-09 18:39:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 108 proven. 7 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 18:39:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:54,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530137865] [2024-11-09 18:39:54,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530137865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:54,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123444334] [2024-11-09 18:39:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:54,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:54,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:54,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:54,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:39:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:54,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:39:54,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-09 18:39:54,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123444334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:54,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:54,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:39:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103108785] [2024-11-09 18:39:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:54,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:39:54,935 INFO L87 Difference]: Start difference. First operand 508305 states and 573666 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)